Hatchway-door-operating mechanism



C. L. COLBY.

HATCHWAY DOOR 'OPERATING MECHANISM.

APPLICATlON FILED 0CT.2,1919.

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c. L. COLBY. HATCHWAY DOOR'OPE'RATING MECHANISM.

APPLICATION FILED OCT. 2, 1919.

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PATENT OFFICE.y

CLARENCE LEE COLBY, OF OMAHA, NEBRASKA.

HATCHWAY-DOOR-OPERATING MEGHANISM.

Specication of Letters Patent.

Patented Apr.. 26, 1921.

Application iled October 2, 1919. Serial No. 328,037.

To all lwhom t may concern.'

Be it known that I, CLARENCE LEE CoLBr, a citizen ofthe United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Im rovements in Hatchway-Door- Operating echanism; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of referenced marked thereon, which form a part of this specification. y

This invention relates to electrically operated elevator gate or door mechanisms and one of the objects thereof is to provide means whereby the gates or doors which guard the hatchways of the elevator shaft will remain closed irrespective of the number of times the elevator car 'passes the hatchway opening unless the gate or door vation.

operating mechanism is deliberately set in operationby the operator; this being possible only when the car has assumed a. position ycapable' of admitting or discharging passengers through the hatchway opening, after which the particular gate or set of gates or door or set of doors, as the case may be, may be caused to open while the car is at' rest at a particular hatchway and then l closed as the car moves away from the hatchuway opening.

Inasmuch as gates and doors may both be opera-ted by the herein described mechanism, these terms will be used interchangeably, it being understood that wherever one term is employed, the other is also contemplated as an alternative.

In the drawings,

Figure I is a detail view of a gate operating mechanism constructed in accordance with my invention.

Fig.l II is a sectional view throughian elevator shaft and pent house to which my invention is applied.

Fig. III is a sectional view through an Fig. V is a. sectional view through a latch ofA clutch mechanism.

Referring now to the drawings b f nui, e l

merals of reference.

1 designates an elevator hatchway or lshaftof usual construction in which an elevator cage 2 may ascend and descend by a-pable. The tubular members 13 and 14 carry pistons or plungers 15 and 16, which are adapted to enter the dash pots 17 and 18 ycarried by the bracket 8, so as to constitute checks to. oppose the downward movement of the head 12 when the head has reached the determined downward limit of travel. The head carries parallel coupling or supporting bars 19 and 20 which are connected to a gate operating bar 21, shown as in the form ofa channel, saidbar21 being normally free to move in response to movement of the head, but the bar is capable of being engaged by latches or clutches so as to operate certain gate mechanism, if desired.

Sleeved upon the rod or bar 21 are tubular members 22 provided with slots 23 to coincide with slots 24 in the web of the bar 21. rIhe tubular members 22 carry brackets 25 to which are pivoted cam levers 2G' with upstanding cam-shaped free ends 27, the levers being normally held in an outwardly swinging-position by means of the spring 28, the outwardly swinging movement of the levers being limited by the loops 29 carred by the tubular members 22. The levers support notched -bar engaging latches 3() intermediate their ends, these being spring pressed by the springs 3l'and adapted to elevator shaft at right angles to the section engage the edges 32 of the slots 24 when the taken on Fig. II, showing the gates in ele- Fig. IV isa wiring diagram -of the circuits employed in connection with my 1nvention, and

levers are moved from right to left, according to Fig. V.

The cam faces of the levers 27 will engage a 'cam actuator consisting of an elongated bar 33, carried,A by the elevator 2 when the elevator is opposite a particular hatchway opening. The ends of the bar 33 are inclined, as at 34 and 35, to cause the cam faces 27 of a particular latch or clutch to ride up the inclined end and on the face 33 when the elevator is ascending or descending. Since the tubular members 22 are loose upon the bar 21 and inasmuch as an elevator opposite a particular hatchway will have a bar 33 in contact with a cam face 27, it is obvious that the latch 30 will move into the slot 24 so as to be in position to engage the edge 32 of the bar 2l when the bar starts to raise.

Current then is applied to the motor 5 so thlat the shaft 6 will be rotated in a clockwise direction. The head 12 will be elevated by the screw 11 so as to raise the rods 19 and 20 and with them, the bar 21. Since the latch 30 will be in the path of the edge 32 of a particular slot 24, the selected latch will be caused to raise with it and as a result, through the flexible connection 36, the gate 37 will be raised to uncover the hatchway opening, it bein understood that the flexible connection 36 1s connected to a tubular member 22 and to a gate.

When the motor is reversed to cause a reversed movement 'of the screw 11 to screw the head 12 downward, the bars 19 and 20 also move downward, carrying with them the bar 21. The downward movement oi the bar 21 will cause the latch 30 to be released from the edge 32 of the slot 24, the spring 28 moving the lever 26 away from the bar 21 so that the sleeve or tubular member 22 will be free to slide on the bar 21,

the weight of the gate then being sufficientto drop by gravity to closin position. The particular arrangement of t e circuits may be such as will provide the best operating conditions but I have shown a suitable diagrammatic arrangement in Fig. IV-in which 38 and 39 are conductors from the main line which lead into a circuit breaker 40 having an outgoing contact 41 and a return contactv 42. The outgoing contact is connected to a conductor 43 provided with a circuit vided with a wheel 51 adapted to contactV with the circuit breaker actuator 52 on the head 12 so that in the event that the head 12 is screwed to the determined limit of its downward movement, 52 will contact with 51 and break the circuit so that the motor will cease to operate, this being for the closing position of the gate. As the motor may have accumulated considerable momentum during the passage of the head downward, the breaking of the circuit may not be effective in promptly stopping it, so I have provided the dash pots and pistons so that as the pistons move into the dash pots, the motor will be loaded suiliciently to cause it to slow down and thus retard any liability to overrun. l

53 is a conductor leading from 43 to 48, there being a circuit breaker 54 included as part of the conductor. The circuit breaker 54 includes a lever mechanism 55 adapted` to contact with a cam 56 on the elevator shaft, as will be apparent by reference to Figs. II and IV. reference to Figs. II and III it will be observed that the direction, the wheel will ride upon one of the cam faces of said cam 56 and energize 48, even if the circuit closer 44 is not on point 44. lng the starting box solenoid so as to close the circuit and as the starting box is providedv "with dash pots or checks which permit the circuit closer therein to break only after a specified time, it will be'obvious that the motor may continue to run during the time that the circuit is closed to the starting box and this will be sufficient to move the head 12 downfar'enough on the threaded portion 11 of thenshaft to permit the gate to close. The opening movement of the gate may bey accomplished by simply moving the lever 44 on contact 59 of conductor 60 which is connected to the lead 61 of the motor, there being a circuit breaker 62 in the circuit 60 so that in the event that the head 12 moves to the limit of its upward stroke, 52 will contact with 62 and break the circuit so as to prevent any further upward movement of ead 12. 63, connected to the lead 64 of the motor, is also connected to 42 and serves as a return conductor.

In circuit 60 is a circuit closer 65, which normally interrupts the circuit but which will close the circuit only when the elevator is oppositea, hatchway and the wheel 66 on lever ,67 can contact with cam 68 carried by the hatchway wall and adjacent to the cam 56.

When the parts are assembled and an ele vator reaches the hatchway opening, the switch 44 may be moved over on contact 59 so current will pass from 43 to conductor 60 through the'motor, back through 63 This will be effective in energizlcuit closer 65 will make contact.

to 42. This is possible because at that time, the wheel 66 will be on cam 68 and the cir- Therefore, the motor will start to rotate in af clockwise direction, elevating the head l2 and opening the gate, as heretofore explained. I

When the head is moved to full gateopening movement, it will contact with 62 and break the circuit. If the operator in the car desired to close the gate, he can move'the arm 44 over to 44 whereupon the conductor 48 will be energized, causing the motor to rotate in an anti-clockwise direction and impart a reverse or downward movement to the head 12, thus causing the gate to close.

If, however, the operator omits to swing the circuit closer 44 to 44', and starts the car, the wheel 58 will ride upy on one of the cam faces of the cam 56, momentarily closing the circuit 48 so as to throw the starting box into operation and thereby energize the4 motor.

If, during the time that the car is moving between hatchway openings, the switch 44 should happen to move over to contact 59, no action of the gate actuating mechanism could take place because thecircuit closer 65 would be at its open position and 60 could not be energized.

From the foregoing it will be apparent that it will be impossible to open the gate from the car while the car is in motion, because circuit closer 65 is carried by the car and it is only effective to close the circuit and contact with 68 and this it' cannot do until the car is opposite a hatchway opening. It will also be apparent that, should the car start before the operator closes circuit 45, the motor will nevertheless be energized through the starting box and the gates will automatically close, thereby liability of accident will be eliminated. y

What I claim and desire to secure by Letters-Patent is:

1. In combination with an elevator cage and its hatchway, having hatchway openings and doors normally closing them, of mechanism for imparting movement to a selected door to open a particular hatchway opening comprising a Ivertically movable head, connections between the head and the door so that the movement of the head in one direction will cause an opening movement to be imparted to the door and a movement of the head in the other direction will cause a closing movement to be imparted to said door, a motor driven screw feed for imparting movement to the head in either direction, and manually controlled means for causing rotation o f the motor in one di,- rection and automatically operated means in response to movement of the elevator for causing rotation of the motor in the opposite direction.

2. An elevator operating mechanism comprising a vertically operating head, means connected to said head for imparting movement to a hatchway door, plungers on the head, and dash pot cylinders below the head :and in line with the plungers.

3. In a device of the class described, a

pair of vertical guideways, a head slidable .on said guideways, a motor, a screw shaft in threaded engagement with said head, pistons on said head, and dash pot cylinders below the head and in line with the pistons.

4. In a device of the class described, a i

rotatable, threaded shaft, a head in threaded engagement with said shaft, door operating mechanism connected to said head, pistons integral with said head, and dash pot cylinders below the head and in line with the pistons.-

In testimony whereof I affix my signature.

CLARENCE LEE COLBY. 

